diff --git a/include/v8.h b/include/v8.h
index 0da1fa6af1..ee49ca4349 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -1108,67 +1108,6 @@ class V8EXPORT Value : public Data {
    */
   bool IsRegExp() const;
 
-
-  /**
-   * Returns true if this value is an ArrayBuffer.
-   * This is an experimental feature.
-   */
-  bool IsArrayBuffer() const;
-
-  /**
-   * Returns true if this value is one of TypedArrays.
-   * This is an experimental feature.
-   */
-  bool IsTypedArray() const;
-
-  /**
-   * Returns true if this value is an Uint8Array.
-   * This is an experimental feature.
-   */
-  bool IsUint8Array() const;
-
-  /**
-   * Returns true if this value is an Int8Array.
-   * This is an experimental feature.
-   */
-  bool IsInt8Array() const;
-
-  /**
-   * Returns true if this value is an Uint16Array.
-   * This is an experimental feature.
-   */
-  bool IsUint16Array() const;
-
-  /**
-   * Returns true if this value is an Int16Array.
-   * This is an experimental feature.
-   */
-  bool IsInt16Array() const;
-
-  /**
-   * Returns true if this value is an Uint32Array.
-   * This is an experimental feature.
-   */
-  bool IsUint32Array() const;
-
-  /**
-   * Returns true if this value is an Int32Array.
-   * This is an experimental feature.
-   */
-  bool IsInt32Array() const;
-
-  /**
-   * Returns true if this value is a Float32Array.
-   * This is an experimental feature.
-   */
-  bool IsFloat32Array() const;
-
-  /**
-   * Returns true if this value is a Float64Array.
-   * This is an experimental feature.
-   */
-  bool IsFloat64Array() const;
-
   Local<Boolean> ToBoolean() const;
   Local<Number> ToNumber() const;
   Local<String> ToString() const;
diff --git a/src/api.cc b/src/api.cc
index e7a0324567..4352ef3301 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -2409,45 +2409,6 @@ bool Value::IsArray() const {
 }
 
 
-bool Value::IsArrayBuffer() const {
-  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsArrayBuffer()"))
-    return false;
-  return Utils::OpenHandle(this)->IsJSArrayBuffer();
-}
-
-
-bool Value::IsTypedArray() const {
-  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsArrayBuffer()"))
-    return false;
-  return Utils::OpenHandle(this)->IsJSTypedArray();
-}
-
-
-#define TYPED_ARRAY_LIST(F) \
-F(Uint8Array, kExternalUnsignedByteArray) \
-F(Int8Array, kExternalByteArray) \
-F(Uint16Array, kExternalUnsignedShortArray) \
-F(Int16Array, kExternalShortArray) \
-F(Uint32Array, kExternalUnsignedIntArray) \
-F(Int32Array, kExternalIntArray) \
-F(Float32Array, kExternalFloatArray) \
-F(Float64Array, kExternalDoubleArray)
-
-
-#define VALUE_IS_TYPED_ARRAY(TypedArray, type_const)                          \
-  bool Value::Is##TypedArray() const {                                        \
-    if (IsDeadCheck(i::Isolate::Current(), "v8::Value::Is" #TypedArray "()")) \
-      return false;                                                           \
-    i::Handle<i::Object> obj = Utils::OpenHandle(this);                       \
-    if (!obj->IsJSTypedArray()) return false;                                 \
-    return i::JSTypedArray::cast(*obj)->type() == type_const;                 \
-  }
-
-TYPED_ARRAY_LIST(VALUE_IS_TYPED_ARRAY)
-
-#undef VALUE_IS_TYPED_ARRAY
-
-
 bool Value::IsObject() const {
   if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsObject()")) return false;
   return Utils::OpenHandle(this)->IsJSObject();
@@ -2815,7 +2776,14 @@ void v8::TypedArray::CheckCast(Value* that) {
   }
 
 
-TYPED_ARRAY_LIST(CHECK_TYPED_ARRAY_CAST)
+CHECK_TYPED_ARRAY_CAST(Uint8Array, kExternalUnsignedByteArray)
+CHECK_TYPED_ARRAY_CAST(Int8Array, kExternalByteArray)
+CHECK_TYPED_ARRAY_CAST(Uint16Array, kExternalUnsignedShortArray)
+CHECK_TYPED_ARRAY_CAST(Int16Array, kExternalShortArray)
+CHECK_TYPED_ARRAY_CAST(Uint32Array, kExternalUnsignedIntArray)
+CHECK_TYPED_ARRAY_CAST(Int32Array, kExternalIntArray)
+CHECK_TYPED_ARRAY_CAST(Float32Array, kExternalFloatArray)
+CHECK_TYPED_ARRAY_CAST(Float64Array, kExternalDoubleArray)
 
 #undef CHECK_TYPED_ARRAY_CAST
 
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index 17047e0918..255397b7a9 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -15174,31 +15174,6 @@ THREADED_TEST(Float64Array) {
       v8::kExternalDoubleArray, -500, 500);
 }
 
-#define IS_TYPED_ARRAY_TEST(TypedArray) \
-  THREADED_TEST(Is##TypedArray) {                                             \
-    i::FLAG_harmony_typed_arrays = true;                                      \
-    LocalContext env;                                                         \
-    v8::Isolate* isolate = env->GetIsolate();                                 \
-    v8::HandleScope handle_scope(isolate);                                    \
-                                                                              \
-    Handle<Value> result = CompileRun(                                        \
-        "var ab = new ArrayBuffer(128);"                                      \
-        "new " #TypedArray "(ab)");                                           \
-    CHECK(result->Is##TypedArray());                                          \
-  }
-
-IS_TYPED_ARRAY_TEST(Uint8Array)
-IS_TYPED_ARRAY_TEST(Int8Array)
-IS_TYPED_ARRAY_TEST(Uint16Array)
-IS_TYPED_ARRAY_TEST(Int16Array)
-IS_TYPED_ARRAY_TEST(Uint32Array)
-IS_TYPED_ARRAY_TEST(Int32Array)
-IS_TYPED_ARRAY_TEST(Float32Array)
-IS_TYPED_ARRAY_TEST(Float64Array)
-
-#undef IS_TYPED_ARRAY_TEST
-
-
 
 THREADED_TEST(ScriptContextDependence) {
   LocalContext c1;